Revert "assigns calculated version number to a variable so it is only calculated once"
Revert "assigns calculated version number to a variable so it is only calculated once"

This reverts commit aa8d71a7f93328294afcfafe25f33995947962b2.

We didn't lazy the local variable in the delivery_github resource so the
initialized empty string is what was used instead of the converge-time
computed next version.

Signed-off-by: Robb Kidd <11cd4f9ba93acb67080ee4dad8d03929f9e64bf2@chef.io>

robbkidd/supermarket,nellshamrell/supermarket,juliandunn/supermarket,chef/supermarket,nellshamrell/supermarket,juliandunn/supermarket,nellshamrell/supermarket,robbkidd/supermarket,robbkidd/supermarket,juliandunn/supermarket,chef/supermarket,juliandunn/supermarket,chef/supermarket,robbkidd/supermarket,chef/supermarket,nellshamrell/supermarket,chef/supermarket